Typographical casting-machine.



H. PEARCE IL LZE. BIILINGTGII. TYPOGRAPHICAL CASTING MACHINE.

APPLICATION FILED SEII'. I9. |914. Lf.,

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ii'illlldflld lrlailhlltillll nemen' HERBERT manon aan .rotin nnnnsr millemercis, or snoannnarn, ENGLAND,

AssIGNons ro temeraria ann inserimenti LIMITED, or Lennon, nneiann.

insonne., f

application filed September 19, 1931i.

Typographical Casting-Machines, of which the following is a specification. l

The present invention consists of improved means for adjusting one or all of the molds of a typographical line-casting machine as well as one ot. the knives thereof which trim the sides of a line cast therein, all such adjustments being in respect of the ascender side of a line and independent ot each other.

lt is especially applicable to machines of the Mergenthaler type described in the specification of Letters Patent 436532, 16th September, 1890, and known commercially under the trade mark Linotype For that reason., and also because the application: oi

it to such a machine embodies and exemplifies every feature of the invention, such ap plication has been chosen for specification.

The accompanying drawings illustrate a preferred plication. In them Figure 1` is a front elevation of a mold wheel equipped with ifour molds, to each of which the invention has been applied.:

Fig. 2, a section on the line 2-,2 of Fig.

1, showing the application of the inventionn to the ascender knife; and

Fig. 3, asectional detail.:

Referring rst to the known parts of the machine included in these figures, l, l are the slots or molds proper in. the-respective mold blocks 2 fixed upon the t'ront face of the vertical mold wheel or carrier 8 turning` upon a fixed axle Il. "A slot l extends through its block 2 from front to rear, and has cast in it the body of the line, the printing edgerfthelatter being cast in a mold provided by the respective composed line of matrices (noty shown) and with which the slot lregisters and the front face of the block 2 makes metal tight contact during the actvof casting that line. A block 2 consists of'a body portion 9, a cap plate 10 held away fromit at the desired body di- ,mension of the slot l, by a liner 25 at each i5 end, and @rearward projection partly on Speciteation of Letters Patent.

constructiona-l form of that :ip-

Patented Mar., 2t', im?.

serial no. stenta the4 portion 9 and partly on the cap plate l0, 'extending into a cavity 13 in the wheel 3, the four separate pieces 9, l0, 25, 25,' being held together by screws 27. It is held to the wheel 3 by the countersunk screws 1l, the Shanks of which are passed through corresponding round holes in the fiange l5 of the body portion 9 and screwed into the wheel, llt occupies the respective segment of the wheel 3, its length parallel with a respective diameter oi' the latter. and all the slots l are at a common radial distance from the wheel axis.

Only one mold is 1n use at a time, and the one to be used is at-the top oi" the wheel 3' during the act of casting. A line is cast upside down, 'n'. e., with the tops of its characters on the ascender side 8 of the slot l toward the axis of the wheel. Each of the other slots l has its ascender side toward the said axis to correspond. After a line has heen cast the wheel 3 is turned through three-quarters of a circle in the reverse vdirection to that taken by the hands of a watch and stoppedi lts line is then vertical and opposite the cutting edges of two trimming knives 5, G. These are vertical and parallel` and stationary relatively 'to the wheel 3, being carried by the so-called vise framev 24. The distance i between these knives corresponds with the desired body dimension of the line. The latter is pushed, printing edge first, between the knives 5, 6, by a so-called ejector (not shown), each knife trimming ofi? the respective side of the line any eX- crescence or excess of metal which there may be. The amount oi' trimming required by and done to the non-ascender (right-hand side, looking at liig. 2) side of a line, is small, but that required by the opposite or so-called ascender side, is ot'- great importance.- lt is that side which has a lin cast on it where a slot l registers with the respective mold for the printing edge. Further, amount of trimming done to the ascender the sideoi' each line cast in all the slots 1 on the ascender knife 5, the consequence being that the line will be thrown olf its foot by Athe act of locking up the form olf-which it is part.

it will Abe only slightly trimmed by the A 1, lthe adjustment of them is a more serious :matter still, because of the necessity1 of/each If, on the yother hand, the said slot is too near the aXis, the knife 5 will cut too deeply l into the ejected line, the consequence being that the capitals and ascenderslwill lose their heads.

Hitherto a-slot l has. been rigidly set on its wheel 3 by making the projection 2G of its block 2, abut against one of the long sides of the recess 13. The side usuallv selected for` this purpose has been the one next the wheel axis. This practice has necessitated accurate machining and lit-ting to attain the de sired result in Ithe factory before a machine is sent to its user, and the alternate expansion and contraction of a. mold block 2, wear of the wheel bush 12 against the top of the aXle 4 and of thatvtop, wear of the studs (not shown) projecting rearwardly from the vise frame 24 and with which corresponding holes 28 in the wheel 3 engage to steady the latter in its casting and ejecting positions, :intlwvear of the said holes, all during the'use of the machine by itsk user, soon spoilA that result.

, When the wheel 3 has'a plurality of slots 'Slot of the plurality being atthe cor/rect radial distance from the axis of the :.wlieel, in orderthat all the lines, irrespective of the particular slot in which theyfwere cast, may re,ceive the same treatment from the knives 5, e. y

.The only way in whic'll-ie said result could be ire-attained, has been (and is) to ignore both the projection 26 and cavity 13,

and to rely upon the screws 11., their round holes and the lit of the flange 15 to the face of the Wheel 3. The objectioi'rto this relliance is'that the slot 1 is notheldby the methodl relied 0n, in its correct right angled position vwith reference to the wheel face.

Hence arises the necessity of a datum line independent of each of the surfaces just enumerated, and the one' devised by the present invention is a constant onl parallel with a correct position of a slot'll.. lNhen the mold carrier is `a Wheel such as the one shown that line is a diameter of that'wh'eel and its axle 4,' because it passes through the axis of thelatter, and the position of that axisis constant in both a vertical and a latl eral sense. Each slot l has its own datum line.- The invention therefore consists in means by which a slot 1 and the ascender knife 5 can be adjusted independently of 'each other respectively to and from'and with Areference to the datum line for that slot.

The means for so adjusting 'a slot 1 are as follows: The rradial dimension of vthe cavity 13-Fig. Q-is increased and `the screw holes 14 in the flange 15 on the bodv portion 9 of 'a mold block 2 may be slotted inthe direction of adjustment, or, as' shown in Fig. .1, drilled larger than the screws,

to allow of the adjusting movements of the said block in either direction. The adjusting means consist of a set screw working in the said flange 15, near each end of it, at right angles with its length, and having its head 17 toward the datum line. Each screw 16 passes through a stout cross head 18, fast toand projecting to the front of the wheel B oth cross heads 18 of any mold block 2 must be operatively on a line parallel with a diameter of the wheel 3, and when there is a plurality of mold' blocks the re. spective lines must be at the same ,distance from the' datum line. Neither screws of a mold block may have axial motion. To prevent this, there is, preferably, a collar 19 fast on a screw shanlnon each-side of a cross head 18, thus keeping the shoulder of a screw within the cross head. There may 'also be a locking nut 20 on each shank to engage with the flange 15 after adjustment. B'ot/hfscrews 16, 16, are ofthe same pitch, and there is, preferably, a scale and index associated with each, say index on the cross head 18 and scale on one of the collars 19, to indicate the adjustment distance equal to one or an aliquot part of one turn of a screw 16. Thus, the mold block may be regarded in a. sense asaoating one. It is adjusted by slacking the locking nuts 2O (if necessary) and the fixing screws 11, turning both set-screws 16 in succession or together for the same distance 1n the required. direction, and tightening up the locking nuts and the fixing screws. All the molds on the wheel are so adjusted before starting the .machine and from the datum line.

.-lmife 5 are adjustable easily, laccurately, in-

dependcntly'o'f each other and in respect of a common datum line. This independence i may frequently be advantageous, because it Adoes not follow that. because a pluralityof molds and a knife must be adjusted by a common datum line, that each will require the same linear amount of adjustment.

' ,Having described our invention, we de' clare that what we claim and desire to secure by Letters Patent isz- 1. In a typographical casting machine,

the combination of 'a slotted mold, a car-y rier whereon the mold is mounted, and acljnstahle supporting means for tilting the .mold relatively 'to the carrier to `secure the parallelism of its slot with a constant datum line.

`2. In a typographical casting machine, the combination of a slotted mold, a rotary wheel formed with an enlarged recess Whereiu the mold is mounted, and tvvo independent adjusting` devices supporting the mold hee ol' the lower wall otl said recess and adapted li): their adjustment to tilt the mold relativelv to the rari-.ving wheel to secure the parallelism of its slot with a constant datum line.

2. In a typographical casting machine, du- Couihination ot a slotted mold, a rotary r |u-e| formed with au enlarged recess wherein the mold is mounted, a pair of set screws arranged at the opposite ends ofthe mold and supporting it tree ot' the lower Wall of the reeess and adjustable independently to tilt thtl mold at its opposite ends relatively to the earrying wheel to insure the parallelism ot its slot with a constant datum line, and clamping screws passing through ention to the trimming knives, and means at-y taehed to the earner tor giving support to the mold thereon and adjustable at will to tiltthe mold "relatively to the carrier to insure the parallelism of its slot with the Cutting edges ot the trimming knives when presented thereto.

In witness whereof we have hereunto set our hands in the presence of two Witnesses.

HERBERT PEARCE. JOHN ERNEST BILLINGTON. Witnesses: i

JOHN W. THOMAS, MALCOLM, SMITHURST. 

